3121323022020 has 144 divisors (see below), whose sum is σ = 10320829674624. Its totient is φ = 690430809600.

The previous prime is 3121323022001. The next prime is 3121323022021. The reversal of 3121323022020 is 202203231213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (3121323022021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3463041 + ... + 4270280.

It is an arithmetic number, because the mean of its divisors is an integer number (71672428296).

Almost surely, 2^{3121323022020} is an apocalyptic number.

3121323022020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3121323022020 is an abundant number, since it is smaller than the sum of its proper divisors (7199506652604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121323022020 is a wasteful number, since it uses less digits than its factorization.

3121323022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7733402 (or 7733369 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 3121323022020 its reverse (202203231213), we get a palindrome (3323526253233).

The spelling of 3121323022020 in words is "three trillion, one hundred twenty-one billion, three hundred twenty-three million, twenty-two thousand, twenty".